“…Being the most straightforward measure of the reliability of data transmission, not surprisingly, the error rate (ER) has been widely recognized as a crucial criterion in evaluating the performance of a digital communication system. Many ER estimation methods have been described in the literature, for example, the error counting solution [1], the parameter estimation solution [1,2,3,4,5], the probability density function (pdf) approximation-based solution [6,7,8], the pseudoerror monitoring solution [1,9,10,11,12,13,14,15], and so forth. Among them, the pseudoerror monitoring scheme has attracted special attention due to its distinctive blind estimation capability and consistent performance in various environments.…”